Heated Oxygen Sensor (HO2S)

Heated Oxygen Sensor (HO2S)
This is a "Trustmark Authoring Standards (TAS) Repair Procedure"
- TAS style procedures can be identified by steps that have no accompanying step text and the magenta color of the electrical connectors and fasteners such as nuts, bolts, clamps or clips.
- TAS removal and installation procedures use a sequence of color illustrations to indicate the order to be followed when removing/disassembling or installing/assembling a component.
- Many of the TAS procedures will have the installation information within the removal steps.
- The TAS color illustrations use a variety of symbols to indicate important details of the procedures. It is important to understand these symbols in order to properly used the TAS procedures.
Refer to How to Use TAS Procedures and TAS Symbol Glossary at Vehicle | Description and Operation for additional information on these TAS procedures.
For additional information, refer to How to Use TAS Procedures

Removal
1 Remove the engine cover.
For additional information, refer to Engine Cover Service and Repair

WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.
2 Raise and support the vehicle.
3 Disconnect the heated oxygen sensors (HO2S) electrical connectors.




4 Using the special tool, remove the heated oxygen sensor (HO2S).
Special Service Tool




Wrench, H02S, 310-121

Installation
1 For H02S anti-seize compound information, refer to the specification section.

CAUTION: Make sure the anti-seize compound does not contact the HO2S tip.
2 Apply anti-seize compound to the sensor threads.
3 Install the HO2S.
Special Service Tool




Wrench, H02S, 310-121

Torque to: 45 Nm
4 Connect the HO2S electrical connector.
5 Install the engine cover.
For additional information, refer to Engine Cover Service and Repair